/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict';

module.exports = function() {
  return {
    link: function(scope, element) {
      var processData = scope.processData;
      var selectedActivityInstanceQuery = element.attr(
        'cam-select-activity-instance'
      );

      if (!processData) {
        throw new Error('No processData defined in scope');
      }

      if (!selectedActivityInstanceQuery) {
        throw new Error(
          'No activity instance id query given in @cam-select-activity'
        );
      }

      element.on('click', function(event) {
        event.preventDefault();

        scope.$apply(function() {
          // refresh view with selected activity instance id
          processData.set('filter', {
            activityInstanceIds: [scope.$eval(selectedActivityInstanceQuery)]
          });
        });
      });
    }
  };
};
